What I was planning to do was add the cut out switch into one of the compressor leads and break the connection at wide open throttle. This would be on my 78 Malibu.
Looks like I need to track down the accelerator pedal rod support plate. The part number is 25517909 in the Buick and Chevrolet GM catalogs so it shouldn't be too difficult to find.
But I did learn the Oldsmobile engineers really went over the top with the compressor circuit compared to the other divisions.